本文介绍了Jackson JSON映射键作为包含对象的属性的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
给定这样的结构:
{
"nameOfObject": { "score": 100 },
"anotherObject": { "score": 30 }
}
是可以将其映射到:
class Container {
Map<String, ScoreKeeper> scoreKeepers;
}
class ScoreKeeper {
String name;
int score;
}
这样你最终得到的是名称
属性 ScoreKeeper
实例设置为nameOfObject
和anotherObject
,分别?
So that you end up with the name
property of the ScoreKeeper
instances set to "nameOfObject"
and "anotherObject"
, respectively?
推荐答案
我坚信将POJO与外部化分开。将您的JSON读入Map,然后构建像这样的Container / ScoreKeeper对象(适用于任何拼写错误):
I am a firm believer in separating your POJOs from externalization. Read your JSON into a Map and then build you Container/ScoreKeeper objects like this (apols for any typos):
mapper = new ObjectMapper();
Map<String,Object> data = mapper.readValue(inputstream, Map.class);
Container c = new Container();
for(Map.Entry<String, Object> me : data.entrySet()) {
String key = me.getKey();
Map info = (Map) me.getValue();
ScoreKeeper sk = new ScoreKeeper();
sk.setName(key);
Integer q = info.get("score");
sk.setScore(q);
c.put(key, sk);
}
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